Tracer LED Lowbay 2 - 4 Card, IP20 Lowbay luminaire, slimline steel powder painted white body, polycarbonate cover, internal LED cover for optical control with hinged control gear covers for ease of access and wiring. Options: E3 - Emergency control gear (608 lumens output) ST3 - Emergency Selftest AT3 - Emergency Autotest A - Digital Addressable Lighting Interface (DALI) C - Bi-Level Dimming (Corridor Function) H - High Frequency Dimming (Analogue 1-10v) RD - Reacta-Dim Wireless Module TRL 5M SUSPENSION - Tracer LED suspension kit DS - Double switched